Nut-lock.



J. J. BRUNBLLO.

NUT LOOK.

APPLICATION FILED 'FEB. 26, 1907.

PATENTED FEB. 25,1908.

To all whomii may concern:

r A m; rsvr i it is. it

JOHN .1. Bis-creme, or BLUEFIELD, weer vrasiu ii.

NUUFLOGK.

No. ceases.

Specification of Letters Patent.

Fatent Be it knoim that L'Jornv J. BRUNELLO, a' suhj ect of the King of Italy, residing at Bluefield, in the county of Mercer and. State of West Vir inia, have invented certain new and usefu Improvements in Nut-Locks, of which the following is a specification.

The purpose of t iis invention is to devise novel means for preventing the loosening of nuts of bolts or like fastenings; having portions threaded to receive such nuts.

In accordance with this invention, the

' threaded portion of a bolt. rod or like fastener reference characters.

is provided in aside with alongitudinal groove or channel intersecting the threads and the nut is provided in a side with an opening leading into the bolt opening and adapted to receive a key, the end portion of which enters the longitudinal groove or channel of the bolt or fastening so as to prevent loosening of the not after being tightened or screwed home upon the bolt or fastening.

For a full description of the invention and the merits thereof and also to acquire a knowledge oil the details of construction and the means for effecting the result, reference is to be had to the following descriptionand accompanying drawings, which:

Figure 1 1s a perspective view of a boltand nut embodying the invention. Fig. 2 is a longitudinal section of the threaded portion of the bolt and not showing the opening in the latter registering with the groove or channel in the side of the bolt. Fig. 3 is a view'siniilar to Fig. 2 having a key in posh tion. Fig. 4 is a sectional View oi a Inodifi-' cation.

Corresponding and like "parts are referred to in the followin description and indicated in all the views oi the drawings by the same I The loolt 1 is illustrative of the type or" fastening for which the invention is designed and is provided in a side with a groove or channel. 2 which intersects the threaded poo tion. The not 3 is provided in a side with opening a, said opening creierehly being inclined toward the hose of the nntjto insure the hey being properly dcilec enter and ad'ustedto hrih r the onenin r-oove i is in register.

into the opening The key 5 of wrought metal. and preferably tapers *i' a groove or The niehnation othe cpernig channel l adapted to he 4 together with a bevel at the end of the hey insures the latter entering: the groove or channel 2 when driving the keg horns. The key is formed with ahead which. limits its inw rd movement and enables a suitable tool, such as a claw, tc-he titted thereto for extracting the key when it may he required to remove the nut, thereby admitting of the bolt or fastening being used repeatedly. It is also noted that a cross section. of the hey represents the interlocking portion or the area of the part corresponding to the joint between the nut and bolt hence upon the application of sufiicient force to the nut to turn the same, the key may he cut by a shear action, thereby permitting the nut he removed. This would not he the case if th key entered matching grooves formed in the bolt 1 and in thebolt openingoi' the nut.

Moreover, the provision of the opening a n the opening d it is to be understood that the belt or fastening 1 may be provided. his. side with a plurality of grooves or channels 2, thereby making provision for a nicety oi adjustment of the nut so as to receive the key 5. it is also proposed to provide the nut 3 with a series of openings i, which are spaced diii erently from those in the bolt, whereby one opening registers with one of the grooves at each fraction of a turn. These two features are shown most clearly in Fig. l and provide for a greatrange of adjustment of the nut so that the same may be secured practically at almost any pointin a revolution.

Having thus described the inventihzn-what is claimed as new is:

A not look confinrising a colt one end thereof threaned'and i he plurality of longitudinally coves. a not fitted upon the threaded 1*.

and formed with a plural.

' \J ings hointhe er the bolt receiving opening said lateral openi toward into the registering oove of the bolt, the i In testimony whereof I afiix' my signature said 1ilcey bemg provihedhwith 1rfnbeveledfeiil'd in presence of two witnesses.

w i0 .006 erateswit t inc" etiono ta 5- T lateral op nin to insure a proper deflection I 4 r H BRUNELLO' of the oint 0 the key and also with a head Witnesses:

which its the inward movement of the key G130. L. 'DREiND,

and forms ameens forwithdmwingithe smzcief FLQXD J. Bnow 

